John j



J. I, .GWYNN. Lamp Chimney Holder.

Patented Aug. 27, 1861'.

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gwass 6 5 UNITED STATES PATENT OFFICE.

JOHN J. GWYNN, OF PLAINFIELD, NEW JERSEY.

LAMP.

Specification of Letters Patent No. 33,140, dated August 27, 1861.

T 0 all whom it may concern:

Be it known that I, J OHN J. GWYNN, of Plainfield, in the county of Union, State of New Jersey, have invented certain new and useful Improvements in Burners for Kerosene and other Glass-Chimney Lamps and Gas-Burners; and I do hereby declare that the following is a full and correct description thereof, reference being had to the annexed drawings, forming part of this specification, and to the letters of reference thereon. 1

Figure 1, is a vertical section of a common kerosene burner with this improvement attached. Fig. 2 is a vertical section of a common kerosene burner with this improvement attached. Fig. 3 is a vertical section of a common kerosene burner with this improvement attached. Fig. 4 the pawl or click detached. Fig. 5 modified form of the same. Fig. 6 showing another mode of suspension.

A Fig. 1 is the cap or deflector on which the rests.

B Fig. 1. is the pawl or click.

0 Fig. 1 is the pin or points on which the pawl B is suspended.

Letters A. B. and C. Fig. 2 same as above la mentioned only illustrating the modified pawl Fig. 5 in action.

A and B, Fig. is the same before.

Figs. 3 and 6, is the suspension wire longer than in 1 and 2, and so curved as to stand directly over the serrated rim or gallery of the burner, the points or ends of the wire being fastened thereto, and thus permitting, by the flexible wire, aslight vertical play of the pawl that it may accommodate a thick or thin edged glass.

The nature of my invention, is an appliance, for the purpose of securing the glass over a lamp or other burner which shall accommodate the expansion of the glass when the burner is lighted.

For the purpose of enabling others skilled in the art, to make and use my invention I will proceed to describe its construction and operation.

It will be observed in the form of the pawl B, that when suspended, the preponderating weight being on the outside of the point of suspension, that in its endeavor to balance itself on pin C, Fig.1, it will intrude itself in the inside of the gallery far enough to take all the hold on the rim of the glass that its form will permit. Now any form of pawl made to act on this principle and suspended in the manner shown in Fig. 1, or in any other convenient manner, is in its action automatic, as hereafter shown in describing the manner of using the same.

It will be observed that in Fig. 5 the form of the pawl is modified, the tip or toe being thinner so that it may spring a little to accommodate a thick edged glass.

The operation of this appliance is simply thus, the glass is leaned over so as to put one edge under the lugs or points out in the edge of the gallery for that purpose, opposite the pawl or click and by pressing down the glass onto the cap A, the pawl recedes, and by the weight on the outside of the point of suspension (when the glass is pressed down) the pawl advances and thus secures the glass of its own action. It will be further observed that if you e11- deavor to remove the glass when secured the hold of the pawl becomes more positive, and the glass is held more firmly for the reason that the strain is altogether on the inside of the pointof suspension, and is resisted by the suspending wire. To remove the glass, is simply to put one finger under the pawl on the outside of the gallery and by pushing it upward the pawl recedes from the glass, which can then .be removed.

I do notclaim any part of the construction of the burner as shown.

What I claim and desire to secure by Letters Patent is The suspended pawl or click fastening, in combination with any form of glass chimney or any other burner substantially and for the purpose set forth.

JOHN J. GWYNN.

Witnesses:

J 05. MAYLAND, .WM. BASSFORD. 

